Power take-off



7 Sept. 28,1937. R. W. WAGNER' 2,094,421

' POWER TAKE oFF I I Filed M515. 8, 1957 2 Sheets-Sheet 1 FIG; I.

INVENTO'R Y ROBERT. w. VAGNER" ATTORNEYS Sept. 28, 1937. w. WAGNER 2,094,421

' POWER TAKE-OFF Filed Feb. 8, 1937 2 Sheets -Sheet z d wE INVENTOR ROBERT. w. WAGNER MMW ATTORNEYS v 2,094,421X F '1 V a I POYWERQTAKE-OFEL f H l 1 Rohert Wagner, Detroit, Mien, a ents to 1 J Detroit Harvester Company, Detroit MiclL, a,

H Q, corporation otvMichigan v V I I 1 I Application-February8, 1937, Serial No. 124,749 w i II p i 15 Claims. (01. 14-11) v p v v This invention relates generally to p'owertakewith the transmission "gear; shown, the spring 'oif devices for motor vehic1es,"and refersmore l is sleeved' upon a lateralextensiontof the particularly to devices wherein provision ismade' gear 4 between: a sideflof'ofthe lattenand an for drivingfrom-a common source-of power such abutmentjl'lion the stationary shaft The slid- 5: asthetransmission of the'motor vehicleydifier ingshaft Bis movable in suitable bearings l2 and 5 ent kinds'of equip 'ent such as an aircompressor f I; respectively in theho'u'sing'Zand has an 'elon and a hoist. i i gated slotH receivinga portion ofthe idler gear I i jrone of the essential}'objectspof the invention 4i"'Any'suitable"*mechanism (not showni'may be isito "provide a'de'vicedf the t'ype"menti oned employed for'sliding the shaft '8 hack and forth owherein apower takewfi'iidler gear may, at will/ in the'bearings -l2 and {3;} a v I a 1 be engagedwith 'or disengaged from a'gear of l5, and lirspCtive y '"fl two' se a y the transmiss'ion. I 1 a j able with the idlengear A while the latter is in 1 Another object is to provide a device wherein jmesh withf the transmission" g'ear6 'fondriving two gears operable respectiveiy for driving the resp t ve y a air co pr ssor 1 and aho st 15' hoist and air compressor; maybeaIternateIy en- (n0t"sh0wi1). Preferably the gear Isis-located 15 1 gaged with the'idler' gear aforesaid to be driven within the housing 2 but iss d bl n S thereby while'it isin mesh with the transmission ary v f r i y' p r io s Qfthe a r gear,'-so that saidhoist'andair compresso may V compressor casing '20. I *A'sshownjthis casing 20 operate independentlv of'each other. is fastened to the powertake-ofl? housing 2 and 1 12 Another objectis'to provide the idler'gear and contains a gear '2l constantly in mesh with the 1 1 oneof the two last' 'mentionedfiriving gears with vg 5, a C a k Sh ft Ope able by the gear 2 1 1" a common shifter mechanism; wherein provi; a'pis ton 23 and a'connecting rod 24. A'cylinder 101), is made: i iti'ally causing said driving 25 for the piston 23;m ay have anij suitableinlet gear to remain inoprativewhile theidlergear is and utlet'pass es fi difl r sp c v y or 25 engaged with the transmission gear, and forai Pl w h a s i sl and 9 25 subsequently causing said driving gear to be enp t v l desired: 1, I v 'gag'ed withthe idler gear while the latter is in T e e r-"l p d u a rotating Shaft I engagementfwith the transmission gear; I in the housing 2', and is received in a short or i Other objects, advantages'a'nd novelf details of narrow 3 n the i l Sq 1 3 Suit- 1 30 construction of thisinventi'onwil'l be made morej l mechanism (not shown)" may be connected 30 apparentasthis description proceeds, especially to the exin s dfen 31501 1 6 rotating" Sha t 30 wwhen considered in'connection with thej'a ccom 1 o driving t hO S I v Q 1 v p anying drawings;whe rein: Infuse, the elem 'tswithinthe power take- I n Figure 1 is a side elevation of a powerrtake-ofl" oif housing 2 are normally m he osmon illus- 3 device embodying my inventionand showing the trated in Figure '2-. When'itisdesired to drive I transmission housing of a motor vehicle broken 1 either the"air compressor ill or; theho t; the away and in section; I 1 f shifter mechanism is'operatedso that the shifter F gure 21s a'sectionalview taken suhstantially shaft 8 will be'move'd to theieft.- Upon initial on the line 2-2 ofFi'gure 1;; g "movement of the slidingshifter shaft 8, to the I 14 1 Figure "3 is an elevation of theair compressor left, the gear 4 will be moved hy thespring 'I 40 unit; 1' into'driving engagementfwiththe'transmission 'Figure 4 is aviewtakenxat' substantially right earEGJ-At e amet s I618 mowe by r angles "to Figure 3with parts hroken away and theksh'aft 8 time e n h t 0: Ho e in section. V I upon this initial movement ofthe shaft 8 the I Referring now to the draw i gajl "is a power r 15 is Still sen 1 T8 5! bemuse 45 v take-off device embodying my invention having the relative position of said gears and iii in ahousing 2 attachable to a transmission housing engagement with the walls 40 and M respectively 1 3 of amot'or vehicle and containingan idler gear of the slots llandili in the shifter shaft is l [that is slidableon astation'ary shaft 5 110 and maintained, "Thus whil'e'g'ear 4 is'in'jmesh with fromengagement with asuitablei gearj'tof the I gear6,land gea'rplG is out of mesh' w h e 50 transmission. a it' is possibletoshift gear loby ra suitable shift Q I is a coiljspring forfmovingthe idler vgear 4' U er fork suchas lj into' eshwith' gear- 4 to cause 1 into engagement withuthe transmission gear 6" the piston 23 of the air coinpressorto he operated and 'B is a sliding shaftof my shifter mechanism" from the transmission gear 6. "Upon further formoving the idler gear 4 out of engagement movement of the shifter shaft 8 to the left, the 55 while the latter is in mesh with gear 6.

against further movement to the left by the' abutment. As a result, the proper 'engage-' ment of gear 16 with the gear 4 may be made When gear I B is moved into engagement with gear 4,

the spring 1 will maintain proper engagement of gear 4 with gear 6.

When the shifter shaft 8 is moved to the right, the elongated slot I 4 will permit the gear 4 to be held by the spring .1 in mesh with gears until gear I6 is moved by the wall 4| of slot 3| in shaft 8 out of mesh with gear 4. Continued movement of theshaft 8 tothe right will cause gear 4 to be moved by the wall 40 of slot [4 in shaft 8 out of mesh withgear 6, so that the parts will 7 resume the position illustrated in Figure 2.

What I claim as my invention is;

1. In a power take-off device, two gears oper-. I

able independently of each other for driving equipment, and an idler gear movable into and out of engagement with a transmission gear and adapted while in engagement with said transmission gear to be engaged by either of the two gears aforesaid. V

.2. In a power take-off device, an idler gear movable into and out of engagement with a' transmission gear, a gear operable to drive a predetermined type of equipment, and shifter mechanism operable to initially cause the idler gear to be moved into engagement with the transmission gear andto subsequently cause the drive gear to be moved into engagement with the idler 3. In a power take-ofl device, two gears operableindependently of each other to drive equipment, independent shifter mechanisms for said gears, and a commonsource of power for said gears including an idler gear movable into and out of engagement with a transmission gear, and under the control of one of the shifter mechanisms aforesaid.

4. Ina power take-off device, an idler gear movable into and out of engagement with a transmission gear, shiftermechanism for said idler gear including a spring for moving said idler gear into engagement with the transmission gear, and a manually operable member for moving said idler gear out of engagement with said transmission gear, and means engageable with said idler gear while in engagement with said transmission gear for operating a predetermined kind of equipment.

movable into andout of engagement with a transmissiongear, and a gear movable into enidler gear and movable by said shifter shaft relative to said idler gear.

2,094,421 gearl i will be engaged with the gear 4 so that '7. In a power take-off device, an idler gear movable into and out of engagement with a transmission gear, a gear for driving a predetermined kind of equipment movable into and out of engagement with the idler gear, and shifter mechanism for said idler and driving gears including a slidable shifter shaft having slots receiving said gears, the slot receiving the idler gear being elongated to permit movement of said shaft and driving gear relative to said idler gear. 8. In a power take-off device, an idler gear movable into and out of engagement with a transmission gear, a gear for driving a predetermined kind of equipment movable into and out of engagement with the idler gear, and shifter mechanism forsaid idler and driving gears including a slidable shifter shaft, and a coil spring, said shifter shaft having a lost motion connection with said idler gear and a relatively close connection with said driving gear, and said spring beingoperable to take up lost motion between said idler gear andshifter shaft during a predetermined movement of the latter.

9. In a power take-ofi device; an idler gear movable into and out of engagement with a transmission gear, agear for driving a predetermined kind of equipment. movable into and out of engagement with the idlergear, and shifter mechanism for said idler and driving gears including a slidable shifter shaft, and a coil, spring, said shiftershaft-having a relatively close connection with said driving gear and a lost motion connection with said idler gear permitting movement of the shifter shaft and driving gear relative to the idler gear, and the spring being operable to positively move the idler gear when the shifter shaft is moved in one direction and to take up lost motion betweenthe idler gear and shaft when the shaft is moved in the opposite direction.

10. In a power take-off device, two independent driving gears, anidler gear adapted to move into and out of engagement with a transmission gear and constituting a common source of power for said drivinggears, and means for shifting said driving gears into engagement with said idler gear. 7

, 11, In a power take-off device, two independent driving gears, an idler gear adapted to move into and out of engagement with a transmission gear and constituting a common source of power 7 i v v and constituting a common source of power for 5. In a power take-off device, an idlergear said driving gears, and means operable while said idler gear is in engagement with the transmission gear for shifting said driving gears into and out of engagement with said idler gear.

13. In a power take-off device, a power take-off shaft, a shaft substantially parallel to said power take-off shaft, an idler gear on the last mentioned shaft and adapted to move into and out of engagement with a transmission gear, a, gear splined upon the-power take-ofishaft and movable into and out of engagement with said idler gear, and shifter mechanism operable. to initially cause the idler gear to be movedinto engagement with the transmission gear and to; subsequently cause the mea er spiined gear to be moved into engagement with the idler gear. a g I 14. In a power take-of! device, a power take off shaft, a shaft substantiallyparallel to said power take-oft shaft, an idler gear on the last mentioned shaft and adapted to move into and out of engagement with a transmission gear, a gear splined upon the power take-off shaft and movable into out of engagement with said idler gear, shifter mechanism operable to one position to permit the idler gear to be moved into engagement with the transmission gear and operable to a second position to cause the splined gear to be moved into engagement with the idler gear, and yieldable means operable when the shifter mechanism is in the first position mentioned to move the idler gear into engagement with the transmission gear, said shifter mechanism being operable to move the splined gear out of engagement with the idler gear and to move the'latter out of engagement with the transmission gear. v

15. In a power take-off device, a power takeofl shaft, a shaft substantially parallel to said power takemfl shaft, an idler gear on the last mentioned shaft and adapted to move into and out of engagement with a transmission gear, a

gear splined upon the power take-oil shaft and movable into and out of engagement-with said idler gear, shifter mechanism operable to one position to permit the'idler gear tobe moved into; engagement with the transmission gear and oper ableto a second position to cause the 'splined gear to be-moved into engagementwith the idler gear, yieldable means operable'when the shifter mechanism is in the first position mentioned to move the idler gear into engagement with the transmission gear, a second gear shiftable into and out of engagement with the idler gear when the latter is in engagement with the transmission gear, and means operable when the shifter mechanism aforesaid is in the first position mentioned to move the second gear into engagement with said idler gear. 7

" ROBERT W. WAGNER. 

